The Pyle Waterproof Megaphone - Water Resistant PA Bullhorn Speaker with Built-in Rechargeable Battery and LED Lights - High-Powered Digital Megaphone - Marine Grade Waterproof Construction - Water Resistant & Weatherproof Design - Compact & Portable PA Speaker System - Built-in LED Lights - Rechargeable Battery for Wireless PA Speaker Portability - Battery Charges via Included Wall Power Adapter - Integrated Siren Alarm Function - Adjustable Volume Control - Ergonomic Light-Weight Pistol Grip Chassis - Perfect for Crowd Control & Public Gatherings - For Indoor/Outdoor Use - What s in the Box: - Waterproof Megaphone - Removable Rechargeable Battery - Technical Specs: - MAX Power Output: 40 Watt.